December 2014 LSAT
Section 4
Question 13
Mayor: To keep our neighborhoods clean, every street in town will be swept at least once a month. If a neighborhood n...
Replies
Mehran on July 20, 2018
@Zahra the issue with (B) is that just because a neighborhood is qualified, it doesn't mean that the neighborhood has made a request for interim sweeping.Compare that with (D), "A qualified neighborhood that REQUESTS an interim sweeping will have its streets swept more than once a month."
Hope that helps! Please let us know if you have any other questions.
Kanyin on July 3, 2019
Hi there,I ended up choosing D but think that C could have worked as well. Could we get an explanation for why C is wrong? For context, this is my diagram
NMF > QIS
not QIS > not NMF
Request from qualified neighborhood > Satisfied
not satisfied > not qualified neighborhood
Answer c: not qualified > not swept more than once a month (not QIS > not more frequest)
swept more than once (more frequent) > qualified
Answer D: QN > swept more than once
not swept more than once > not qn that requests
- I chose D because we know that if a qualified neighborhood requests interim sweepings it'll be satisfied which means it'll be swept more than once a month. Why is C wrong? It looks like it could be traced back as well.
Ravi on July 21, 2019
@Kanyin,Happy to help. Let's look at (C).
Here's how we can diagram the stimulus:
A diagram helps here. Street in Town - > Swept Min Once/Month
Needs More Sweepings - > Qualified Interim Sweepings
Qualified Interim Sweepings - > Request Satisfied Immediately
This doesn't really link well, but we do know from this that if a
street in town needs more than 1 sweeping per month, it'll be
qualified, and if a qualified street requests another sweeping, its
request will be satisfied immediately.
(C) says, "No street will be swept more than once a month unless it is
located in a qualified neighborhood"
This is the inverse of our diagram. We know that qualified - >extra
sweeping, but this does not mean that not qualified - >not extra
sweeping. Since it's the inverse, it definitely isn't a 'must be
true,' so we can get rid of this answer choice.
Does this make sense? Let us know if you have any other questions!